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arsen [322]
3 years ago
12

An elements atomic number is 79. How many protrons would an atom of this element have?

Physics
1 answer:
Andrews [41]3 years ago
6 0
9 thats you electron number and what makes up 9 is 3 
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Which of the following are not units of frequency: Hertz. m/s. waves/s
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Which type of committee has members from both the House and the Senate?
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3 years ago
Qué tipo de onda tiene mayor velocidad: Onda mecánica en un sólido Onda electromagnética Onda mecánica en el aire
kogti [31]

Answer:

Onda electromagnética

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Las ondas mecánicas requieren un medio material para la propagación, mientras que las ondas electromagnéticas no requieren un medio material para la propagación.

Generalmente, las ondas electromagnéticas se mueven con una velocidad muy alta.

Todas las ondas electromagnéticas se denominan colectivamente luz y tienen una velocidad común de 3 × 10 ^ 8 m / s en el aire.

Ninguna onda mecánica tiene una velocidad tan alta en el aire.

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